Revert the rest of the COMPAT_MODE changes (back to hrev52003.)

This reverts commit 458e758f3792ef11ca26d6ff7e24600c88326e83.
This reverts commit ce5eb94a82b1b377ef5909e65411e031f54ceb15.
This reverts commit aac8d4c317ca11a9a6e194e2c668e8183ec23dd6.
This reverts commit c70cba914aa79c01bbc2da38085936f589899c8c.
This reverts commit 2ffbe7aaca8668c5a68ac7488459bace7a0700f2
This reverts commit c6e120e2d2f909d95f95839fa99fccf811fdb3c5.

kernel/x86_64: add setup_compat_signal_frame.

* add compatibility signal types.

Change-Id: I665020234be0ba2ccbb33bdbc338c11a214ab6e8

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged the signals branch into trunk, with these changes:
* The team and thread kernel structures have been renamed to Team and Thread
respectively and moved into the new BKernel namespace.
* Several (kernel add-on) sources have been converted from C to C++ since
private kernel headers are included that are no longer C compatible.

Changes after merging:
* Fixed gcc 2 build (warnings mainly in the scary firewire bus manager).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40196 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed unused <arch>_switch_stack_and_call() and
arch_thread_switch_kstack_and_call().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34971 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Alexander von Gluck (kallisti5) to get the PPC build going again
(mostly at least). Also disables -Werror for the binutils, but those should
be fixed eventually.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29804 a95241bf-73f2-0310-859d-f6bbb57e9c96

axeld + bonefish:
* Implemented automatic syscall restarts:
- A syscall can indicate that it has been interrupted and can be
restarted by setting a respective bit in thread::flags. It can
store parameters it wants to be preserved for the restart in
thread::syscall_restart::parameters. Another thread::flags bit
indicates whether it has been restarted.
- handle_signals() clears the restart flag, if the handled signal
has a handler function installed and SA_RESTART is not set. Another
thread flag (THREAD_FLAGS_DONT_RESTART_SYSCALL) can prevent syscalls
from being restarted, even if they could be (not used yet, but we
might want to use it in resume_thread(), so that we stay
behaviorally compatible with BeOS).
- The architecture specific syscall handler restarts the syscall, if
the restart flag is set. Implemented for x86 only.
- Added some support functions in the private <syscall_restart.h> to
simplify the syscall restart code in the syscalls.
- Adjusted all syscalls that can potentially be restarted accordingly.
- _user_ioctl() sets new thread flag THREAD_FLAGS_IOCTL_SYSCALL while
calling the underlying FS's/driver's hook, so that syscall restarts
can also be supported there.
* thread_at_kernel_exit() invokes handle_signals() in a loop now, as
long as the latter indicates that the thread shall be suspended, so
that after waking up signals received in the meantime will be handled
before the thread returns to userland. Adjusted handle_signals()
accordingly -- when encountering a suspending signal we don't check
for further signals.
* Fixed sigsuspend(): Suspending the thread and rescheduling doesn't
result in the correct behavior. Instead we employ a temporary
condition variable and interruptably wait on it. The POSIX test
suite test passes, now.
* Made the switch_sem[_etc]() behavior on interruption consistent.
Depending on when the signal arrived (before the call or when already
waiting) the first semaphore would or wouldn't be released. Now we
consistently release it.
* Refactored _user_{read,write}[v]() syscalls. Use a common function for
either pair. The iovec version doesn't fail anymore, if anything could
be read/written at all. It also checks whether a complete vector
could be read/written, so that we won't skip data, if the underlying
FS/driver couldn't read/write more ATM.
* Some refactoring in the x86 syscall handler: The int 99 and sysenter
handlers use a common subroutine to avoid code duplication.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23983 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged branch haiku/branches/developer/bonefish/optimization revision
23139 into trunk, with roughly the following changes (for details svn
log the branch):
* The int 99 syscall handler is now fully in assembly.
* Added a sysenter/sysexit handler and use it on Pentiums that support
it (via commpage).
* Got rid of i386_handle_trap(). A bit of functionality was moved into
the assembly handler which now uses a jump table to call C functions
handling the respective interrupt.
* Some optimizations to get user debugger support code out of the
interrupt handling path.
* Introduced a thread::flags fields which allows to skip handling of
rare events (signals, user debug enabling/disabling) on the
common interrupt handling path.
* Got rid of the explicit iframe stack. The iframes can still be
retrieved by iterating through the stack frames.
* Made the commpage an architecture independent feature. It's used for
the real time data stuff (instead of creating a separate area).
* The x86 CPU modules can now provide processor optimized versions for
common functions (currently memcpy() only). They are used in the
kernel and are provided to the userland via commpage entries.
* Introduced build system feature allowing easy use of C structure
member offsets in assembly code.

Changes after merging:
* Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp
(caused by refactoring and introduction of "call" debugger command).



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implemented sigaltstack() and set_signal_stack(), thus closing bug #1401.
* On exec() the new function thread_reset_for_exec() is called which clears the signals
and cancels an eventually set alarm. Both things weren't done before...
* Some minor cleanups.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21989 a95241bf-73f2-0310-859d-f6bbb57e9c96

Never include anything in an extern "C" block.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21607 a95241bf-73f2-0310-859d-f6bbb57e9c96

* There was no reason to copy the "userland calls exit_thread()" stub with interrupts
turned off - accessing userland memory. Now, arch_thread_enter_userspace() does that
job, and as a result, may also fail.
* dump_thread() now directly prints the info of the current thread when used without
argument (rather than iterating the thread list to look for the current thread).
* If arch_thread_init_tls() fails upon thread creation, the function will now return
an error.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19775 a95241bf-73f2-0310-859d-f6bbb57e9c96

arch_thread_init_tls() now accesses user memory safely, and therefore could now
fail.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19768 a95241bf-73f2-0310-859d-f6bbb57e9c96

Prevent cyclic inclusion.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11473 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some header work to reduce dependencies. Also fixes the debug build.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10434 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added a arch_thread_init() function prototype.
Changed return types to status_t where appropriate.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9507 a95241bf-73f2-0310-859d-f6bbb57e9c96

remove static from non-ARCH_x86 thread function prototypes


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9474 a95241bf-73f2-0310-859d-f6bbb57e9c96

Replaced all remaining PAGE_SIZE with B_PAGE_SIZE, addr with addr_t.
Removed the definition of PAGE_SIZE and addr.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9433 a95241bf-73f2-0310-859d-f6bbb57e9c96

static functions need static prototypes


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9390 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added prototypes for arch_{store|restore}_fork_frame().
Removed broken arch_thread::current_iframe field.
Introduced new arch_fork_arg structure.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9295 a95241bf-73f2-0310-859d-f6bbb57e9c96

Made C++ safe.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6994 a95241bf-73f2-0310-859d-f6bbb57e9c96

arch_setup_signal_frame() can now fail.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6970 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some header cleanups.
Renamed dbg_save_registers() to arch_...() since it's arch dependent.
Removed unnecessary dependencies to stage2.h.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3138 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added another argument parameter for the thread creation code. Helps
implementing a more efficient on_exit_thread().


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3073 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added a private tls.h file with definitions for the reserved TLS slots.
Renamed i386_set_kstack() to i386_set_tss_and_kstack(), because that's what
it does.
Added a new function arch_thread_init_tls() which must be called after
having allocated the TLS area.
Renamed arch_thread_initialize_kthread_stack() to arch_thread_init_kthread_stack()
to be more consistent.
Changed the parameters for arch_thread_enter_uspace() - it now gets a pointer
to the thread structure and takes the user stack pointer from there (which
might also be architectural different).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2379 a95241bf-73f2-0310-859d-f6bbb57e9c96

posix signals support, 1st pass


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1623 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added prototypes for the sys_/user_ attribute calls.
Changed the file_descriptor structure (more status_t, name removed).
Changed "extern inline" to "static inline" in thread.h/arch_thread.h as those
also work with -O0 -g.
Added prototypes for [arch_cpu_]user_strlcpy().


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1454 a95241bf-73f2-0310-859d-f6bbb57e9c96

First round of big changes: the term team has replaced proc all over the kernel, the few kern_* syscalls have been renamed to sys_* for consistency, and other small changes. The ps app is temporarily disabled until get_next_team_info is implemented.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@557 a95241bf-73f2-0310-859d-f6bbb57e9c96

It is accomplished ...


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged the signals branch into trunk, with these changes:
* The team and thread kernel structures have been renamed to Team and Thread
respectively and moved into the new BKernel namespace.
* Several (kernel add-on) sources have been converted from C to C++ since
private kernel headers are included that are no longer C compatible.

Changes after merging:
* Fixed gcc 2 build (warnings mainly in the scary firewire bus manager).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40196 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed unused <arch>_switch_stack_and_call() and
arch_thread_switch_kstack_and_call().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34971 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Alexander von Gluck (kallisti5) to get the PPC build going again
(mostly at least). Also disables -Werror for the binutils, but those should
be fixed eventually.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29804 a95241bf-73f2-0310-859d-f6bbb57e9c96

axeld + bonefish:
* Implemented automatic syscall restarts:
- A syscall can indicate that it has been interrupted and can be
restarted by setting a respective bit in thread::flags. It can
store parameters it wants to be preserved for the restart in
thread::syscall_restart::parameters. Another thread::flags bit
indicates whether it has been restarted.
- handle_signals() clears the restart flag, if the handled signal
has a handler function installed and SA_RESTART is not set. Another
thread flag (THREAD_FLAGS_DONT_RESTART_SYSCALL) can prevent syscalls
from being restarted, even if they could be (not used yet, but we
might want to use it in resume_thread(), so that we stay
behaviorally compatible with BeOS).
- The architecture specific syscall handler restarts the syscall, if
the restart flag is set. Implemented for x86 only.
- Added some support functions in the private <syscall_restart.h> to
simplify the syscall restart code in the syscalls.
- Adjusted all syscalls that can potentially be restarted accordingly.
- _user_ioctl() sets new thread flag THREAD_FLAGS_IOCTL_SYSCALL while
calling the underlying FS's/driver's hook, so that syscall restarts
can also be supported there.
* thread_at_kernel_exit() invokes handle_signals() in a loop now, as
long as the latter indicates that the thread shall be suspended, so
that after waking up signals received in the meantime will be handled
before the thread returns to userland. Adjusted handle_signals()
accordingly -- when encountering a suspending signal we don't check
for further signals.
* Fixed sigsuspend(): Suspending the thread and rescheduling doesn't
result in the correct behavior. Instead we employ a temporary
condition variable and interruptably wait on it. The POSIX test
suite test passes, now.
* Made the switch_sem[_etc]() behavior on interruption consistent.
Depending on when the signal arrived (before the call or when already
waiting) the first semaphore would or wouldn't be released. Now we
consistently release it.
* Refactored _user_{read,write}[v]() syscalls. Use a common function for
either pair. The iovec version doesn't fail anymore, if anything could
be read/written at all. It also checks whether a complete vector
could be read/written, so that we won't skip data, if the underlying
FS/driver couldn't read/write more ATM.
* Some refactoring in the x86 syscall handler: The int 99 and sysenter
handlers use a common subroutine to avoid code duplication.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23983 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged branch haiku/branches/developer/bonefish/optimization revision
23139 into trunk, with roughly the following changes (for details svn
log the branch):
* The int 99 syscall handler is now fully in assembly.
* Added a sysenter/sysexit handler and use it on Pentiums that support
it (via commpage).
* Got rid of i386_handle_trap(). A bit of functionality was moved into
the assembly handler which now uses a jump table to call C functions
handling the respective interrupt.
* Some optimizations to get user debugger support code out of the
interrupt handling path.
* Introduced a thread::flags fields which allows to skip handling of
rare events (signals, user debug enabling/disabling) on the
common interrupt handling path.
* Got rid of the explicit iframe stack. The iframes can still be
retrieved by iterating through the stack frames.
* Made the commpage an architecture independent feature. It's used for
the real time data stuff (instead of creating a separate area).
* The x86 CPU modules can now provide processor optimized versions for
common functions (currently memcpy() only). They are used in the
kernel and are provided to the userland via commpage entries.
* Introduced build system feature allowing easy use of C structure
member offsets in assembly code.

Changes after merging:
* Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp
(caused by refactoring and introduction of "call" debugger command).



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implemented sigaltstack() and set_signal_stack(), thus closing bug #1401.
* On exec() the new function thread_reset_for_exec() is called which clears the signals
and cancels an eventually set alarm. Both things weren't done before...
* Some minor cleanups.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21989 a95241bf-73f2-0310-859d-f6bbb57e9c96

Never include anything in an extern "C" block.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21607 a95241bf-73f2-0310-859d-f6bbb57e9c96

* There was no reason to copy the "userland calls exit_thread()" stub with interrupts
turned off - accessing userland memory. Now, arch_thread_enter_userspace() does that
job, and as a result, may also fail.
* dump_thread() now directly prints the info of the current thread when used without
argument (rather than iterating the thread list to look for the current thread).
* If arch_thread_init_tls() fails upon thread creation, the function will now return
an error.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19775 a95241bf-73f2-0310-859d-f6bbb57e9c96

arch_thread_init_tls() now accesses user memory safely, and therefore could now
fail.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19768 a95241bf-73f2-0310-859d-f6bbb57e9c96

Prevent cyclic inclusion.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11473 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some header work to reduce dependencies. Also fixes the debug build.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10434 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added a arch_thread_init() function prototype.
Changed return types to status_t where appropriate.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9507 a95241bf-73f2-0310-859d-f6bbb57e9c96

remove static from non-ARCH_x86 thread function prototypes


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9474 a95241bf-73f2-0310-859d-f6bbb57e9c96

Replaced all remaining PAGE_SIZE with B_PAGE_SIZE, addr with addr_t.
Removed the definition of PAGE_SIZE and addr.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9433 a95241bf-73f2-0310-859d-f6bbb57e9c96

static functions need static prototypes


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9390 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added prototypes for arch_{store|restore}_fork_frame().
Removed broken arch_thread::current_iframe field.
Introduced new arch_fork_arg structure.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9295 a95241bf-73f2-0310-859d-f6bbb57e9c96

Made C++ safe.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6994 a95241bf-73f2-0310-859d-f6bbb57e9c96

arch_setup_signal_frame() can now fail.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6970 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some header cleanups.
Renamed dbg_save_registers() to arch_...() since it's arch dependent.
Removed unnecessary dependencies to stage2.h.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3138 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added another argument parameter for the thread creation code. Helps
implementing a more efficient on_exit_thread().


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3073 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added a private tls.h file with definitions for the reserved TLS slots.
Renamed i386_set_kstack() to i386_set_tss_and_kstack(), because that's what
it does.
Added a new function arch_thread_init_tls() which must be called after
having allocated the TLS area.
Renamed arch_thread_initialize_kthread_stack() to arch_thread_init_kthread_stack()
to be more consistent.
Changed the parameters for arch_thread_enter_uspace() - it now gets a pointer
to the thread structure and takes the user stack pointer from there (which
might also be architectural different).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2379 a95241bf-73f2-0310-859d-f6bbb57e9c96

posix signals support, 1st pass


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1623 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added prototypes for the sys_/user_ attribute calls.
Changed the file_descriptor structure (more status_t, name removed).
Changed "extern inline" to "static inline" in thread.h/arch_thread.h as those
also work with -O0 -g.
Added prototypes for [arch_cpu_]user_strlcpy().


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1454 a95241bf-73f2-0310-859d-f6bbb57e9c96

First round of big changes: the term team has replaced proc all over the kernel, the few kern_* syscalls have been renamed to sys_* for consistency, and other small changes. The ps app is temporarily disabled until get_next_team_info is implemented.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@557 a95241bf-73f2-0310-859d-f6bbb57e9c96

It is accomplished ...


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96